Stop and waste valve.



C WALKER STOP AND WASTE VALVE.

APPLICATION FILED NOV. 18, 1912- 1,'127552, Patented Feb. 9, 1915.

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M M W 'nl' Nlmfels PETERS C0., PHOTOLITHO., WASHlNcmN. D, EA

'entri-in srirrns rara CHARLES WALKER, or KNOXVILL'E, frnivinssnn.

4Application led November 18, 1912.

VKnox-and State of Tennessee, have invented certain new and useful Improvements in 'Stop and Waste Valves, of which the following is a specification.

This invention relates to improvements in combined stop and drain valves, wherein two valve bodies are employed, one controlling the circulation passages and the other controlling the drainage opening or openings.

More particularly, the invention relates to the type of construction such as is disclosed in my copending application Serial No. 719,673, wherein the two valve bodies aforesaid are arranged in coaxial relation upon a common stem and are operated indefinitely timed sequence, whereby the water inlet passage is completelyand securely closed before the drain opening or openings are uncovered, and in normal use, the drain opening or openings are closed before the water inlet passage is uncovered.

rhe object of the present invention is to provide a construction of the type stated, wherein the parts are organized inan especially facile and simple manner; wherein there is no substantial liability of derange- -inent; and wherein the action of the valve will not be detrinientally ai'iected by such ordinary wear as may taire place.

ln order that the invention 4maybe more Areadily understood, reference is had to the accompanying drawings, wherein Y Figure 1 is a vertical `longitudinal sectional view oi' one form ot valve in which the features of the inventionare incorporated; Fig. 2 is a detail sectional view in .the plane xof Fig. 1;'and Fig. 3 is a view similar to Fig. 1, showing a slightly modified construction.

Similar characters of reference designate corresponding parts throughout the several views.

The valve casing is shown at 1 and has the usual branches 'for connection to the respective city supply and house service pipes, these connections communicating through an opening 9 in a horizontal partition 5. rQlhe base of the valve ispi'ovided with a drainage opening 17. rl`he opening') is controlled by `a valve, preferably made in upper and lower sections 10 and y11, which have threaded engagementwith one another, and

Specification of Letters Patent.

sror Ann WASTE va'tv'n.

Patented rei). e, isis.

Serial No. 732,100.

ythe opening 17 is controlled by a drain valve 6, having on its under face a'washer 7, held in place by a screw 8. If the hot water lor other trapped pipes ofthe system are yto be drained, an opening 18 may be provided lin the base to affi'ordcommunication between the interior of the casingy 1 and the branch connection for such'hot water or trapped pipes. The main yand drain valves aforesaid are mounted upon acoininon stem 2,

which is movable axially of the casing, ypassing through suitably packed openings in the upper casing head 4i and liii they gland 3 which is connected to said head, The main valve'is movable relatively to the stein 2, while the drain valve is movable with said stem, and if desired,rin`ay be formed integrally therewith.

The stein-2 is provided with screw threads 20, which ymesh with the screw threads 21 Iliieing preferably formed on the section 11 of ysaid main valve.

The stem 2 is provided with stop means, such as a collar 14;, for engagement with the head -1 to limit the yupward movement of said stem, and said head is provided lwith depending lugs 15 `to limit the upward movementl of the main valve. The main valve is vmovable axially of the casing, and isA positively guided and centered its movement, for this ypurpose having laterally projecting lugs 12 which engage `in longitudinal 'grooves in the inner .face of the 4 casing.

The main valve may, if desired, be provided with a washer 16 toinsure of a watertight engagement thereof upon the seat which circumscribes the opening 9.

It will be observed that'water enters the casing above the partition 5 and that the main valve is arranged above said partition. Thestem 2 passes loosely through the-head l andV beyond said head is provided with a hand-le In the normal relation of the parts, 'the main valve is in open position, and the drain valve is in closed position. Assuming the relations stated toexist, and that the threads desired, by a spring 22 located between head 4 and the main valve. The counter clockwise turning movement of the handle is continued, after the mainvalve is seated, and during this continued rotation of the handle, the drain valve G is lifted, thereby uncover- .ing the openings 17, 18, and closing opening 9 bymain valve 11 which is held seated during the upward movement of stem 2 under the downward pressure of the spring 22 and the water-main pressure. When collar 14 reaches the head 4, any further attempt to turn the stem applies screw-pressure to the main valve to seat it more firmly.

Vhen the main valve is in closed relation and the drain valve iS open, assuming that it is desired to close the drain port, and to reestablish the connection of the house pipes with the city water main, the handle is turned in a clock-wise direction. and the stem 2 moves downwardly, the drain valve 6 ultimately engaging the base of the casing 1 and closing the openings 17 and 18. Further clockwise rotation of the handle causes the elevation of the main valve from the opening 9, at which time the communication of the water service pipe with the city pipe is established. The upward movement of the main valve is limited by the lugs 15, and should the effort be made to continue the clockwise rotation of the handle after the main valve engages the lugs 15, such effort will be effective to seat the drain valve more iirmly, if possible, than it was seated on the downward movement of the stem 2.

1t will be obvious that the stem 2 may be provided with a left-hand thread instead of a right-hand thread if preferred.

The form of valve shown in Fig. 3 is the same in its essential principles as the embodiment already described, and it differs only as to minor details of construction, whereinthe drain valve 6 is swiveled on the stem 2, and an air vent 19 is so arranged with relation to the drainage opening 17 that it will always be above said opening, whether the valve be disposed in a hori- Zontal or a vertical line of the pipe.

Having fully described my invention, I claim:

1. A valve-casing having a drain port and a valve stem opening in alinement, a partition in said casing having a port alined between said drain port and opening, a valve stem extending through said stein-opening and partition port, a valve on said stem controlling said drain port, a non-rotatable reciprocating valve screw-threaded to said stem and controlling said partition port, means limiting the longitudinal movement of said stein with relation to said casing, and a part of the casing against which the said non-rotatable valve abuts to limit its opening movement, whereby both valves may be closed by positive screw pressure.

2. valve-casing having a drain port and a valve stem opening in alinement, a partition i-nsaid casing having a port alined bev tween said drain port and opening, a valve stem extending through said stem-opening and partition port, a valve on said stem controlling said drain port, a non-rotatable reciprocating valve screw-threaded to said stem and controlling said partition port, means limiting` the longitudinal movement of said stem with relation to said casing, and a part of the casing against which the said non-rotatable valve abuts to limit its opening movement, whereby both valves may be closed by positive screw pressure, and a chamber receiving drainage through said drain port and having a discharge opening and an air inlet opening, the latter'opening being located above said discharge opening in either a vertical or a horizontal operative position of said casing.

3. A valve-casing having a drain port and a valve stem opening in alinement, a partition in said casing having a port alined between said drain port and opening, a valve stem extending through said stem-opening and partition port, a valve on saidstem controlling said drain port, a spring-pressed non-rotatable reciprocating valve screwthreaded to said stem and controlling said partition port, a collar fast to said stem limiting the longitudinal movement of said stein with relation to said casing, and a part oi' the casing against which the said springpressed non-rotatable valve abuts to limit its opening movement, whereby both valves may be closed by positive screw pressure.

4i. A valve casing having a drain port, and a second port adjacent thereto, a valve .stein opening in alinement with said drain port, a partition in said casing having a port alined between said drain port and opening, a valve stem extending through said stemopening and partition port, a valve on said stem controlling said drain port and said second port, a non-rotatable reciprocating valve screw-threaded to said stem and controlling said partition port, means limiting `opening and partition port, a valve on said stem controlling said drain port and said second port, a non-rotatable reciprocating valve screw-threaded to said stem and controlling said partition port, means limiting the longitudinal movement of Said Stem with relation to said casing, and a part of the casing against which the said non-rotatable valve ahuts to limit its opening movement, whereby both valves may be closed by positive screw pressure, and a chamber receiving drainage through Said drain port and having a discharge opening and an air inlet opening, the latter opening being located above said discharge opening in either a vertical or a horizontal operative position on said casing.

6. In a valve of the character described, a drainage opening and an air inlet opening located above said drainage opening in either a horizontal or vertical operative position of said valve.

In testimony whereof I have hereunto Set my hand in presence of two subscribing witnesses.

CHARLES WALKER. Witnesses:

SAMUEL EDWARD LYNN, MARCUS A. PARKER.

Copies of this patent may be obtained for jive cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

